12226e4371
and passed as paramters into straight forward non const built in types, i.e. const bool foogbar(const int) becomes bool foobar(int).
111 lines
3.4 KiB
Plaintext
111 lines
3.4 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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#ifndef OSG_FOG
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#define OSG_FOG 1
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#include <osg/StateAttribute>
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#include <osg/Types>
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#include <osg/Vec4>
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#ifndef GL_FOG_COORDINATE
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#define GL_FOG_COORDINATE 0x8451
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#endif
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#ifndef GL_FRAGMENT_DEPTH
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#define GL_FRAGMENT_DEPTH 0x8452
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#endif
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namespace osg {
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/** Fog - encapsulates OpenGL fog state. */
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class SG_EXPORT Fog : public StateAttribute
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{
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public :
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Fog();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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Fog(const Fog& fog,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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StateAttribute(fog,copyop),
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_mode(fog._mode),
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_density(fog._density),
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_start(fog._start),
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_end(fog._end),
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_color(fog._color),
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_fogCoordinateSource(fog._fogCoordinateSource) {}
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META_StateAttribute(osg, Fog,FOG);
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
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virtual int compare(const StateAttribute& sa) const
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{
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// check the types are equal and then create the rhs variable
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// used by the COMPARE_StateAttribute_Paramter macro's below.
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COMPARE_StateAttribute_Types(Fog,sa)
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// compare each paramter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_mode)
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COMPARE_StateAttribute_Parameter(_density)
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COMPARE_StateAttribute_Parameter(_start)
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COMPARE_StateAttribute_Parameter(_end)
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COMPARE_StateAttribute_Parameter(_color)
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COMPARE_StateAttribute_Parameter(_fogCoordinateSource)
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return 0; // passed all the above comparison macro's, must be equal.
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}
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virtual void getAssociatedModes(std::vector<GLMode>& modes) const
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{
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modes.push_back(GL_FOG);
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}
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enum Mode {
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LINEAR = GL_LINEAR,
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EXP = GL_EXP,
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EXP2 = GL_EXP2
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};
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inline void setMode( const Mode mode ) { _mode = mode; }
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inline Mode getMode() const { return _mode; }
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inline void setDensity( float density ) { _density = density; }
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inline float getDensity() const { return _density; }
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inline void setStart( float start ) { _start = start; }
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inline float getStart() const { return _start; }
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inline void setEnd( float end ) { _end = end; }
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inline float getEnd() const { return _end; }
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inline void setColor( const Vec4 &color ) { _color = color; }
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inline const Vec4& getColor() const { return _color; }
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enum FogCoordinateSource
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{
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FOG_COORDINATE = GL_FOG_COORDINATE,
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FRAGMENT_DEPTH = GL_FRAGMENT_DEPTH
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};
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inline void setFogCoordinateSource(GLint source) { _fogCoordinateSource = source; }
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inline GLint getFogCoordinateSource() const { return _fogCoordinateSource; }
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virtual void apply(State& state) const;
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protected :
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virtual ~Fog();
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Mode _mode;
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float _density;
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float _start;
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float _end;
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Vec4 _color;
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GLint _fogCoordinateSource;
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};
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}
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#endif
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